West Sussex · Air handling unit cleaning
Wiston AHU cleaning
For cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Wiston, one call is all it takes: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Air handling units due a clean after building work
- Drain trays holding standing water
- Dirty fans and fan housings
When something else is needed
We will not sell you work that doesn’t address the problem, so here are the limits:
- Building management system faults
- Ductwork downstream of the unit, which is a separate clean
- Leaking heating or cooling coils
Not sure which it is? You can give us a ring on 0345 646 2711, or send details by email and we’ll tell you honestly before you book.
What we work on in Wiston
- Dampers and louvres
- Supply and extract fans
- Drain trays
- Filter sections
- Internal panels
- Heating and cooling coils
AHU cleaning in Wiston
Our AHU cleaning covers sites in Wiston and the rest of West Sussex, in buildings such as offices, schools, healthcare sites and shops. Units are cleaned when the site can spare them, often evenings, overnight or weekends. The work covers filter sections, dampers and louvres and supply and extract fans, and the jobs we see most are debris and leaves in the fresh air intake and drain trays holding standing water.
For a building in or near Wiston, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
Insurers, fire officers and environmental health officers all look at records. That is why every job is written up in a report with photos, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Location
- Wiston (BN44)
- Wider area
- West Sussex
- Paperwork
- Photo report after each visit
- Price
- Fixed quote, normally within a working day
- Hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
In-house cleaning or a specialist?
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, they should report it rather than try to fix it. We’ll take a look and give you a fixed quote.
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Fixed quotes for AHU cleaning in Wiston
Some jobs are bigger than they look, and some smaller. The main factors:
- How easy every part is to reach
- How many systems or sites are involved
- Site rules, permits and inductions
- The times the site is available
Putting the work off seldom saves money. Build-up, wear and faults tend to get worse, not better, which can make the next visit longer. If you are not sure what’s needed, call 0345 646 2711, or email photos for straight advice and a fixed quote.
Helping us quote
Photos and a few facts are often enough to price the work. Send what you can of the following:
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- The postcode and the type of business
- Detail shots of panels, filters and grilles
- Problems your staff have spotted
If you need AHU cleaning in Wiston, give us a ring on 0345 646 2711, or email photos. Tell us what kind of premises it is and when it’s open, plus pictures or the previous report if they’re to hand. A fixed quote normally follows within one working day.
Nearby places to Wiston
Other services in Wiston
Wiston buildings and their air
Wiston, about 42 miles from central London, is within our usual area. We work evenings, overnight and at weekends, so the visit fits around the site.
Ventilation work in and around Wiston is risk-based: inspect, then clean what needs it. Every job around Wiston ends with a record of what was cleaned and what was found.
Wiston is about 6 miles north of Worthing, in West Sussex. Every kind of commercial site in Wiston, we can take on AHU cleaning. Visits can be booked for evenings, overnight or weekends so the site keeps running. Across West Sussex, we cover 371 places, Wiston among them. You can also see our page for Brighton, about 12 miles away.
Postcode districts we cover here for AHU cleaning: BN44. Local streets include Hole Street, Water Lane and Spithandle Lane, all of which we cover for AHU cleaning. Other places close to Wiston include Ashington (1 mile north-west), Ashurst (2 miles north-east), Dial Post (3 miles north), Partridge Green (4 miles north-east) and Broomer's Corner (4 miles north). We also work in nearby towns such as Horsham (11 miles north), Worthing (6 miles south), Haywards Heath (13 miles north-east), Burgess Hill (11 miles east), Littlehampton (10 miles south-west) and Shoreham-by-Sea (7 miles south-east).
What’s near Wiston
Other landmarks nearby include Steyning Museum (2.8 miles south-east). Not far away are Chanctonbury Hill and Knepp Wildland.
How it works
Your trading hours come first. We book the visit for a time the area is closed, whether that is an evening, overnight or a weekend. When the team arrives, the work area is protected and the relevant equipment is switched off to cool, and the work takes one overnight shift for many single units, with bigger plant phased. The timing of a visit to Wiston is set by you, and the travel is our side of the planning.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Before we arrive
- Arrange a key holder or contact on site
- Make sure equipment near the work can be switched off and left to cool
- Let us know how we reach the system, including roofs, risers and plant rooms
Ask for a quote
Quoting starts with a diagnosis, from your pictures and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work, before any work starts.
Advice
Multi-site and managed buildings
Records are where multi-site compliance often slips. Each visit produces a dated report with photos, so you can show an insurer or inspector what was done at each site.
We regularly work with managing agents. Send the address, what’s needed and how access works, and we will send a fixed quote.
What the work involves, part by part
Rooftop and plant room units
Smaller units in ceiling voids are part of the work as well. The space underneath is protected with sheeting first.
Filters
Filters are the first line of defence in the unit. We check them, and clean or change them as agreed in the quote, and clean the filter housing.
Common questions in Wiston
Can you come to Wiston after we close?
Yes, out-of-hours work is a big part of what we do. It means the site in Wiston keeps running as normal. Tell us your opening hours when you ask for a quote.
Is Wiston within the area you cover?
Yes, smaller places are covered as well as towns. A survey first, from pictures or a visit, means we arrive with the right kit.
Will we get paperwork for the AHU clean?
Yes. Every clean comes with a TR19® certificate and a photo report. They’re worth keeping with the plant records.
Can we book visits on a schedule?
Yes. Send details of the systems and how they’re used, and we will suggest a schedule and quote for it.
What types of premises do you cover?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
Do you look at the system first?
Yes. We always survey first, either from pictures and details you send or on a site visit. A fixed quote follows.
How often should an air handling unit be cleaned?
That is set by inspection, in line with TR19® Air. A hard-working unit, or one serving a hospital or care home, may need cleaning more often.
How long will the unit be out of action?
The work takes anything from half a day for one small unit to several shifts for a plant room full of them. Bigger units can be phased, and you can ring 0345 646 2711 or email us to plan it.
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. Our tips:
- Make sure the unit’s access doors open easily
- Look at the condensate drain whenever the unit is serviced
- Change filters on schedule and log each change
- Do not ignore odours coming through the grilles
Keep filter changes on schedule between cleans, because good filters protect everything downstream. Record each change in the maintenance log.
Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.